Prum's Graacher Himmelreich vineyard occupies the Mosel's distinctive steeply south-westerly-facing slate slopes, where Riesling thrives in this iconic terroir renowned for aromatic precision. The slate soils retain and radiate heat throughout the growing season, extending ripening time and promoting both aromatic ripeness and noble rot development even in cooler years. The vineyard sits between 300 and 500 metres elevation on terraced slopes requiring intensive hand-cultivation and harvest practices. The 2023 vintage began cool before moderately warming through summer; 2024 delivered an early, warm growing season favouring sugar accumulation and concentrated flavour development. Prum maintains low-yield viticulture, hand-harvesting in multiple selective passes to assess ripeness and noble rot presence.

Both Auslese (2023, 2024) and Kabinett (2023) ferment in stainless steel at controlled cool temperatures (8–12°C), preserving aromatic volatility and developing residual sweetness through arrested fermentation with native yeasts. Indigenous yeasts conduct slow fermentation over several months, building complexity and fine acidity balance throughout the fermentation. Lees contact remains minimal to retain aromatic clarity and primary fruit character. Prum bottles the wines without fining or filtration, preserving mineral tension, aromatic precision, and volatile compounds. The 2023 and 2024 selections reflect vintage character: cool 2023 emphasising bright citrus and mineral notes; warmer 2024 showing deeper stone fruit and tropical notes.